Snap gauge



Feb. 28, 1933; ALDEBQRGH 1,899,253

SNAP GAUGE Filed April 17, 1931 gwwmtoc H I I Erik )iiudeborqh. 5 5 W.

Patented Feb. 28, 1933' UNITEDSTATES ERIK H. ALDEBORGH,- or POUGHKEEPSIE, NEW; :YORK. i'nssrenon: T0- srnnmmn {GAGE I COMPANY, INC., OF POUGHKEEPSIE,

NEW YORK, nconronar'roiwron NEW YORK SNAP GAUGE Application filed April 17,

This invention relates toa gauge andmore particularlyto that. kind which is known as a snap gauge employed forthe checking of production of faces, which goto make a gauge of rugged construction, these large contact surfaces are undesirable for very close or accurate measurements as they produce friction when brought into contactwith the work and" adJacent the outer edges thereof and which I do not provide the most sensitive feel;

The object of the invention is to provide a snap gauge in'which the contact surfaces of both the anvil and the pins is, very much reduced in size without detracting from the rugged construction and width of jaw of the gauge.

Another object of the invention is to fa'cili-- tate the manufacture of the gaugeby reducin g the surface of the contacts required to be ground and lapped, and also if desired these contact surfaces may be construc ied of a harder material thanthat of the body of the anvil and pins.

In the drawing Fig. 1 is a side elevationof a snap gauge embodying my invention, and-also shows a piece of Work being gauge Fig. 2 is an edge view of the same, illustrat- 'ing how a shoulder piece may be gauged close up to the shoulder.

Fig. 3 shows an enlarged detail view of the gauging pins.

Fig. 4 shows an enlarged detail view of the side of the anvil. f

Fig. 5 shows a plan :viewof the contact gauging surface of the pins.

Fig. 6 shows a plan view of the contact gauging surface of the anvil.

Fig. 7 is a cross sectional View of the anvil showing the contact pieces integral with, the body thereof,

and placed adjacent tached thereto in any 1931. Serial No. 530,754.

but showing the a Fig. 8 is a similar view,

material and atcontact pieces of a different tached to the body portion.

Referring tothe drawing- The usual type of C-frame snap gauge 10 is shown, having the anvil 11 and the go and no go pins 12 and 13 with suitable adjustingand locking means.

The heads 14 and 1 5 of the pins 12 and 13 are square or rectangular in place of being, round as in the usual style, and the outer, or go head 1 1 is formed with two parallel contact surfaces or ridges 16, which are formed are slightlyraised above the surface ofthe head 14; while the no go head 15 is pro,-

. vided with a similar raised piece or contact surface 17 formed on its forward edge, and at right angles tothe raised contacts 16 on the head 14. Both the forward ends of the contacts 16 and the'forward edge of the contact 17 are slightly beveled to facilitate the entering of the work, these beveled edges being indicated as at 18'and 19.

The anvil 11 is also formed with two parallel gauging contact strips 20 slightly raised above the surface of the body of the anvil, to the sides or edges thereof, and also beveled upon their outer ends as at 21.

In the construction shown in Fig. 8, which will also apply to the heads of the contact pins, the contact. pieces 22 may be of a different material from that of the body of either the anvil or the pins, and may be atsuitable manner, such as welding or brazing.

Itfwill thus be seen that the narrow con-' V tact surfaces while beingspaced apart have allthe advantage of the. usual wide type of anvil and pins, but will present a narrow contact'surfac'e reducing the frictional contact Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

In a gauge of the class described, gauging members comprising an anvil member and two gauging members, raised parallel contact strips formed on said anvil member, raised contact strips formed on one of said gauging members in parallel relation to the contact strips on said anvil, one contact strip formed on the'second gauging member at right angles to the contact strips on the first gauging member.

In testimony WhereofI aflix my signature.

ERIK H. 'ALDEBORGH. 

